when i get back from work i will update mine as i only bloody updated to 1.5 yesterday so have nothing to lose, i will let you know if mine shows up as 1.6 or not. Just read a few other people stating after they updated it shows 1.53 not 1.6 for some reason!!

I read somewhere the update was to correct the battery issue of sudden voltage drop within a minute or more even when fully charged, causing some Phantoms to go into auto land or in some cases to crash.